>>>>> On Tue, 29 May 2007 01:51:51 +0200, Arno Lehmann said: > > Hi, > > On 5/28/2007 8:36 AM, Dave wrote: > > Hello, > > I've got a centos5 box that needs to be fully backed up because it's > > going to be reinstalled with raid. I don't want to loose any data. I set up > > a backup job that backed up / and /boot do i need to do anymore? The job > > completed successfully, but i'm getting in the email output: > > > > wserv-fd: /sys is a different filesystem. Will not descend from / into > > /sys > > wserv-fd: /dev is a different filesystem. Will not descend from / into > > /dev > > > > Do i need either of these filesystems if i'm going to be recreating the > > system then installing from backup? > > That depends on how you will reinstall your OS. > > If you will d a minimal system installation and then restore your backup > over it these two file systems will not be needed because they will be > created at installation time and populated automatically. > > (Keep in mind that, restoring to a system with a different setup, will > get you in trouble when you overwrite, for example, your initrd, > bootloader setup, and /etc directory. You should take care not to > overwrite anything necessary for booting from the RAID system.) > > If you want to do a bare-metal restore to the RAIDified system, you'll > need some extra steps afterwards, mainly making the RAID system known to > the OS. > > Personally, in your situation, I'd prefer to do a minimal system > installation, save the essential configuration (bootloader setup, > kernel, initial ram disk, and disk setup come to mind, but there are > probably others...) and then restore over it. If you did a real minimal > installation, and don't swith to another architecture (x86 vs. 64-bits > enhanced mainly), don't install a newer or older kernel, and so on, you > could restore and NOT overwrite existing files. In case your system > doesn't boot, you could use your distributions repair installation > tolls, or simply first copy the saved low-level setup over the broken > installation and re-install the bootloader. > > In any case, a scenario like this can really get you into trouble :-)
I think you never want to backup /sys (assuming it is mounted as the pseudo-filesystem giving access to the kernel). Likewise, if /dev is a separate filesystem then it is probably controlled by devfs or udev, so will be recreated on boot. __Martin ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
